The liquid mixing process is one of the most important steps in manufacturing. It is used to combine two or more liquids to create a new liquid. The mixing process can be done manually or with the help of a machine.
The liquid mixing process is an industrial operation for mixing and dispersing solids and liquids in a liquid medium. This includes mixing of chemicals, grinding, and dispersing solids mixed in a liquid medium. The mixing process can be achieved either through dispersion or through the blending of components into a single phase.
There are two main types of mixing: static and dynamic. The former is performed at rest, but the latter requires some form of agitation, such as stirring or shaking. Different methods can be used to ascertain the degree of mixing, including visual examination and various apparatuses.
The first step in effective liquid mixing is choosing a mixer that suits your process. There are a variety of mixers on the market that range from simple impeller-type mixers to more complex ribbon or paddle mixers.
The next step is to determine the proper speed and torque for the mixer. Too little speed will not create enough agitation, while too much will cause excessive wear and tear on the mixer and components.
The most common mixer types include:
- Impeller mixers disperse solids and liquids with a high velocity of the impellers.
- Ribbon mixers create better distribution and homogenization than impeller mixers.
- Paddle mixers create more turbulence than ribbon mixers.
Generally, mixing is followed by a dispersion step. The purpose of this stage is to separate the components of a mixture. This process is performed by purging the mixture with steam, which causes the moisture to precipitate out of suspension.
Dispersion takes place in a sieve or centrifuge, which separates some percentage of dispersed solids from the liquid medium.
After dispersion, the liquid medium needs to be clarified or filtered to remove suspended solids. The purpose of this step is to make the liquid clear and allow for visualization via inspection. The most common clarifier is a gravity settler, which consists of a tank containing water with added coagulants at the bottom, where sedimentation takes place.
When the majority of the suspended solids have settled, the clarified liquid is decanted and sent to storage. Unwanted particles can then be filtered out using a filter press or cartridge filters such as sand filters, diatomaceous earth filters, and screen filters.
There are many ways for mixing and dispersing chemical substances in liquids. The most common approach is to use a mechanical mixer in combination with a dispersing agent. The type of mixer and dispersing agent used will depend on the viscosity and surface tension of the liquids, as well as the physical and chemical properties of the solids.